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SN74LS221

Texas Instruments
Part Number SN74LS221
Manufacturer Texas Instruments
Description DUAL MONOSTABLE MULTIVIBRATORS
Published Sep 22, 2019
Detailed Description D Dual Versions of Highly Stable SN54121 and SN74121 One Shots D SN54221 and SN74221 Demonstrate Electrical and Switchin...
Datasheet PDF File SN74LS221 PDF File

SN74LS221
SN74LS221

Overview
D Dual Versions of Highly Stable SN54121 and SN74121 One Shots D SN54221 and SN74221 Demonstrate Electrical and Switching Characteristics That Are Virtually Identical to the SN54121 and SN74121 One Shots D Pinout Is Identical to the SN54123, SN74123, SN54LS123, and SN74LS123 D Overriding Clear Terminates Output Pulse TYPE SN54221 SN74221 SN54LS221 SN74LS221 MAXIMUM OUTPUT PULSE LENGTH(S) 21 28 49 70 description/ordering information The ’221 and ’LS221 devices are dual multivibrators with performance characteristics virtually identical to those of the ’121 devices.
Each multivibrator features a negative-transitiontriggered input and a positive-transition-triggered input, either of which can be used as an inhibit input.
SN54221, SN54LS221, SN74221, SN74LS221 DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITTĆTRIGGER INPUTS SDLS213B − DECEMBER 1983 − REVISED NOVEMBER 2004 SN54221, SN54LS221 .
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J PACKAGE SN74221 .
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N PACKAGE SN74LS221 .
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D, DB, N, OR NS PACKAGE (TOP VIEW) 1A 1B 1CLR 1Q 2Q 2Cext 2Rext/Cext GND 1 2 3 4 5 6 7 8 16 VCC 15 1Rext/Cext 14 1Cext 13 1Q 12 2Q 11 2CLR 10 2B 9 2A SN54LS221 .
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FK PACKAGE (TOP VIEW) 1B 1A NC VCC 1Rext /Cext 1CLR 1Q NC 2Q 2Cext 3 2 1 20 19 4 18 5 17 6 16 7 15 8 14 9 10 11 12 13 1Cext 1Q NC 2Q 2CLR 2Rext/Cext GND NC 2A 2B NC − No internal connection ORDERING INFORMATION TA PACKAGE† ORDERABLE PART NUMBER TOP-SIDE MARKING PDIP − N Tube SN74221N SN74LS221N SN74221N SN74LS221N 0°C to 70°C SOIC − D Tube Tape and reel SN74LS221D SN74LS221DR LS221 SOP − NS Tape and reel SN74LS221NSR 74LS221 SSOP − DB Tape and reel SN74LS221DBR LS221 CDIP − J −55°C to 125°C Tube SNJ54221J SNJ54LS221J SNJ54221J SNJ54LS221J LCCC − FK Tube SNJ54LS221FK SNJ54LS221FK † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.
ti.
com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical appli...


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